Bash script to enable/disable night shift on Mac OS

nightShiftControl.sh

#!/bin/bash

if [ $# -lt 1 ]; then
	echo "Usage: $0 [enable|disable]"
	exit 1
fi

plistLoc="/private/var/root/Library/Preferences/com.apple.CoreBrightness.plist"

currentUserUID=$(dscl . -read /Users/$(whoami)/ GeneratedUID) # Get the GeneratedUID for the current user
currentUserUID=$(echo $currentUserUID | cut -d' ' -f2) # Remove the "GeneratedUID: " part
currentUserUID="CBUser-"$currentUserUID # Append the prefix

# Enable settings
algoOverride=4
enabled=1

if [[ $1 == "disable" ]]; then
	# Disable settings
	algoOverride=3
	enabled=0
fi

# Change the settings directly in the core brightness plist (defaults doesn't deal with nested data structures well)
sudo /usr/libexec/PlistBuddy -c "Set :$currentUserUID:CBBlueReductionStatus:BlueLightReductionAlgoOverride $algoOverride" $plistLoc
sudo /usr/libexec/PlistBuddy -c "Set :$currentUserUID:CBBlueReductionStatus:BlueReductionEnabled $enabled" $plistLoc
sudo /usr/libexec/PlistBuddy -c "Set :$currentUserUID:CBBlueReductionStatus:BlueLightReductionAlgoOverrideTimestamp `date`" $plistLoc

sudo killall cfprefsd
sudo killall corebrightnessd